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Synlett 2004(1): 149-154  
DOI: 10.1055/s-2003-44963
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© Georg Thieme Verlag Stuttgart · New York

Defining Space Around Conjugated Polymers: New Vistas in Self-Amplifying Sensory Materials

Dongwhan Leea, Timothy M. Swager*b
a Department of Chemistry, Indiana University, 800 E. Kirkwood Ave., Bloomington, IN 47405, USA
b Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, MA 02139, USA
Fax: +1(617)2537929; e-Mail: tswager@mit.edu;
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Publication History

Received 18 September 2003
Publication Date:
04 December 2003 (online)

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Abstract

Synthetic strategies to control interchain electronic ­communications within conjugated polymers (CPs) are described. Novel chemical architectures built on iptycenes, metallorotaxanes, and canopied pyrroles restrict the dimensionality of electronic structures responsible for exciton and charge transport. Structure-property relationships emerging from studies of selected systems are discussed, focusing on their implications for the sensitivity of these materials as sensors.

  • 1 Introduction

  • 2 Photochemistry and Electrochemistry of Conjugated
    Polymers

  • 2.1 Fluorescent Polymers

  • 2.2 Conducting Polymers

  • 3 Insulating Molecular Wires

  • 3.1 Shape-Persistent Fluorescent Polymers: Pentiptycene-
    Derived Porous PPE Sensors

  • 3.2 Interlocking 3D Structures: Exciton Diffusion within Chiral Polymer Aggregates

  • 3.3 Three-Strand Conducting Ladder Polymer: Redox
    Matching and Charge Hopping in Polymetallorotaxanes

  • 3.4 Canopied Polymer: Reversible Protonic Doping of a Porous Polypyrrole

  • 4 Summary and Outlook

Key words

conjugated polymer - sensor - transport - exciton - fluorescence - resistivity - iptycene - poly(phenyleneethynylene) - π-π stacking - metallorotaxane - pyrrole